1
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Meredith NY, Borsley S, Smolyar IV, Nichol GS, Baker CM, Ling KB, Cockroft SL. Dissecting Solvent Effects on Hydrogen Bonding. Angew Chem Int Ed Engl 2022; 61:e202206604. [PMID: 35608961 PMCID: PMC9400978 DOI: 10.1002/anie.202206604] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Indexed: 12/26/2022]
Abstract
The experimental isolation of H‐bond energetics from the typically dominant influence of the solvent remains challenging. Here we use synthetic molecular balances to quantify amine/amide H‐bonds in competitive solvents. Over 200 conformational free energy differences were determined using 24 H‐bonding balances in 9 solvents spanning a wide polarity range. The correlations between experimental interaction energies and gas‐phase computed energies exhibited wild solvent‐dependent variation. However, excellent correlations were found between the same computed energies and the experimental data following empirical dissection of solvent effects using Hunter's α/β solvation model. In addition to facilitating the direct comparison of experimental and computational data, changes in the fitted donor and acceptor constants reveal the energetics of secondary local interactions such as competing H‐bonds.
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Affiliation(s)
- Nicole Y Meredith
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, UK
| | - Stefan Borsley
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, UK
| | - Ivan V Smolyar
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, UK
| | - Gary S Nichol
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, UK
| | - Christopher M Baker
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, UK
| | - Kenneth B Ling
- Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, UK
| | - Scott L Cockroft
- EaStCHEM School of Chemistry, University of Edinburgh, Joseph Black Building, David Brewster Road, Edinburgh, EH9 3FJ, UK
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2
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Meredith NY, Borsley S, Smolyar IV, Nichol GS, Baker CM, Ling KB, Cockroft SL. Dissecting Solvent Effects on Hydrogen Bonding. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202206604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Nicole Y. Meredith
- EaStCHEM School of Chemistry University of Edinburgh Joseph Black Building, David Brewster Road Edinburgh EH9 3FJ UK
| | - Stefan Borsley
- EaStCHEM School of Chemistry University of Edinburgh Joseph Black Building, David Brewster Road Edinburgh EH9 3FJ UK
| | - Ivan V. Smolyar
- EaStCHEM School of Chemistry University of Edinburgh Joseph Black Building, David Brewster Road Edinburgh EH9 3FJ UK
| | - Gary S. Nichol
- EaStCHEM School of Chemistry University of Edinburgh Joseph Black Building, David Brewster Road Edinburgh EH9 3FJ UK
| | - Christopher M. Baker
- Syngenta Jealott's Hill International Research Centre Bracknell, Berkshire RG42 6EY UK
| | - Kenneth B. Ling
- Syngenta Jealott's Hill International Research Centre Bracknell, Berkshire RG42 6EY UK
| | - Scott L. Cockroft
- EaStCHEM School of Chemistry University of Edinburgh Joseph Black Building, David Brewster Road Edinburgh EH9 3FJ UK
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3
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Affiliation(s)
- Marcel A. Strauss
- Institut für Organische Chemie Justus-Liebig Universität Gießen Heinrich-Buff-Ring 17 35392 Gießen Deutschland
- Zentrum für Materialforschung (LaMa) Justus-Liebig Universität Gießen Heinrich-Buff-Ring 16 35392 Gießen Deutschland
| | - Hermann A. Wegner
- Institut für Organische Chemie Justus-Liebig Universität Gießen Heinrich-Buff-Ring 17 35392 Gießen Deutschland
- Zentrum für Materialforschung (LaMa) Justus-Liebig Universität Gießen Heinrich-Buff-Ring 16 35392 Gießen Deutschland
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4
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Abstract
The importance of London dispersion interactions in solution is an ongoing debate. Although the significance of dispersion for structure and stability is widely accepted, the degree of its attenuation in solution is still not properly understood. Quantitative evaluations are derived mostly from computations. Experimental data provide guidelines to include London dispersion in solution phase design. Herein, dispersive interactions were examined with an azobenzene probe. Alkyl substituents in meta positions of the azobenzene core were systematically varied and the effect on the half-lives for the thermally induced Z to E isomerization in several alkane solvents was determined. The results show that intramolecular dispersion is only marginally influenced. In solvents with low surface tension, reduced destabilizing solvent-solvent interactions increase the half-life up to 20 %. Specific individual interactions between alkyl chains on the azobenzene and those of the solvent lead to additional fluctuations of the half-lives. These presumably result from structural changes of the conformer ensemble.
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Affiliation(s)
- Marcel A. Strauss
- Institute of Organic ChemistryJustus Liebig University GiessenHeinrich-Buff-Ring 1735392GiessenGermany
- Center for Materials Research (LaMa)Justus Liebig University GiessenHeinrich-Buff-Ring 1635392GiessenGermany
| | - Hermann A. Wegner
- Institute of Organic ChemistryJustus Liebig University GiessenHeinrich-Buff-Ring 1735392GiessenGermany
- Center for Materials Research (LaMa)Justus Liebig University GiessenHeinrich-Buff-Ring 1635392GiessenGermany
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5
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Yamada M, Narita H, Maeda Y. A Fullerene‐Based Molecular Torsion Balance for Investigating Noncovalent Interactions at the C
60
Surface. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005888] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Michio Yamada
- Department of Chemistry Tokyo Gakugei University Nukuikitamachi 4-1-1 Koganei Tokyo 184-8501 Japan
| | - Haruna Narita
- Department of Chemistry Tokyo Gakugei University Nukuikitamachi 4-1-1 Koganei Tokyo 184-8501 Japan
| | - Yutaka Maeda
- Department of Chemistry Tokyo Gakugei University Nukuikitamachi 4-1-1 Koganei Tokyo 184-8501 Japan
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6
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Yamada M, Narita H, Maeda Y. A Fullerene-Based Molecular Torsion Balance for Investigating Noncovalent Interactions at the C 60 Surface. Angew Chem Int Ed Engl 2020; 59:16133-16140. [PMID: 32458522 DOI: 10.1002/anie.202005888] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Indexed: 12/12/2022]
Abstract
To investigate the nature and strength of noncovalent interactions at the fullerene surface, molecular torsion balances consisting of C60 and organic moieties connected through a biphenyl linkage were synthesized. NMR and computational studies show that the unimolecular system remains in equilibrium between well-defined folded and unfolded conformers owing to restricted rotation around the biphenyl C-C bond. The energy differences between the two conformers depend on the substituents and is ascribed to differences in the intramolecular noncovalent interactions between the organic moieties and the fullerene surface. Fullerenes favor interacting with the π-faces of benzenes bearing electron-donating substituents. The correlation between the folding free energies and corresponding Hammett constants of the substituents in the arene-containing torsion balances reflects the contributions of the electrostatic interactions and dispersion force to face-to-face arene-fullerene interactions.
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Affiliation(s)
- Michio Yamada
- Department of Chemistry, Tokyo Gakugei University, Nukuikitamachi 4-1-1, Koganei, Tokyo, 184-8501, Japan
| | - Haruna Narita
- Department of Chemistry, Tokyo Gakugei University, Nukuikitamachi 4-1-1, Koganei, Tokyo, 184-8501, Japan
| | - Yutaka Maeda
- Department of Chemistry, Tokyo Gakugei University, Nukuikitamachi 4-1-1, Koganei, Tokyo, 184-8501, Japan
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7
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Muchowska KB, Pascoe DJ, Borsley S, Smolyar IV, Mati IK, Adam C, Nichol GS, Ling KB, Cockroft SL. Reconciling Electrostatic and n→π* Orbital Contributions in Carbonyl Interactions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005739] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Kamila B. Muchowska
- EaStCHEM School of Chemistry The University of Edinburgh Joseph Black Building David Brewster Road Edinburgh EH9 3FJ UK
| | - Dominic J. Pascoe
- EaStCHEM School of Chemistry The University of Edinburgh Joseph Black Building David Brewster Road Edinburgh EH9 3FJ UK
| | - Stefan Borsley
- EaStCHEM School of Chemistry The University of Edinburgh Joseph Black Building David Brewster Road Edinburgh EH9 3FJ UK
| | - Ivan V. Smolyar
- EaStCHEM School of Chemistry The University of Edinburgh Joseph Black Building David Brewster Road Edinburgh EH9 3FJ UK
| | - Ioulia K. Mati
- EaStCHEM School of Chemistry The University of Edinburgh Joseph Black Building David Brewster Road Edinburgh EH9 3FJ UK
| | - Catherine Adam
- EaStCHEM School of Chemistry The University of Edinburgh Joseph Black Building David Brewster Road Edinburgh EH9 3FJ UK
| | - Gary S. Nichol
- EaStCHEM School of Chemistry The University of Edinburgh Joseph Black Building David Brewster Road Edinburgh EH9 3FJ UK
| | - Kenneth B. Ling
- Syngenta Jealott's Hill International Research Centre Bracknell Berkshire RG42 6EY UK
| | - Scott L. Cockroft
- EaStCHEM School of Chemistry The University of Edinburgh Joseph Black Building David Brewster Road Edinburgh EH9 3FJ UK
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8
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Muchowska KB, Pascoe DJ, Borsley S, Smolyar IV, Mati IK, Adam C, Nichol GS, Ling KB, Cockroft SL. Reconciling Electrostatic and n→π* Orbital Contributions in Carbonyl Interactions. Angew Chem Int Ed Engl 2020; 59:14602-14608. [PMID: 32485046 PMCID: PMC7496118 DOI: 10.1002/anie.202005739] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 05/29/2020] [Indexed: 12/16/2022]
Abstract
Interactions between carbonyl groups are prevalent in protein structures. Earlier investigations identified dominant electrostatic dipolar interactions, while others implicated lone pair n→π* orbital delocalisation. Here these observations are reconciled. A combined experimental and computational approach confirmed the dominance of electrostatic interactions in a new series of synthetic molecular balances, while also highlighting the distance-dependent observation of inductive polarisation manifested by n→π* orbital delocalisation. Computational fiSAPT energy decomposition and natural bonding orbital analyses correlated with experimental data to reveal the contexts in which short-range inductive polarisation augment electrostatic dipolar interactions. Thus, we provide a framework for reconciling the context dependency of the dominance of electrostatic interactions and the occurrence of n→π* orbital delocalisation in C=O⋅⋅⋅C=O interactions.
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Affiliation(s)
- Kamila B. Muchowska
- EaStCHEM School of ChemistryThe University of EdinburghJoseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - Dominic J. Pascoe
- EaStCHEM School of ChemistryThe University of EdinburghJoseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - Stefan Borsley
- EaStCHEM School of ChemistryThe University of EdinburghJoseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - Ivan V. Smolyar
- EaStCHEM School of ChemistryThe University of EdinburghJoseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - Ioulia K. Mati
- EaStCHEM School of ChemistryThe University of EdinburghJoseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - Catherine Adam
- EaStCHEM School of ChemistryThe University of EdinburghJoseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - Gary S. Nichol
- EaStCHEM School of ChemistryThe University of EdinburghJoseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
| | - Kenneth B. Ling
- SyngentaJealott's Hill International Research CentreBracknellBerkshireRG42 6EYUK
| | - Scott L. Cockroft
- EaStCHEM School of ChemistryThe University of EdinburghJoseph Black BuildingDavid Brewster RoadEdinburghEH9 3FJUK
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9
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Strauss MA, Wegner HA. Exploring London Dispersion and Solvent Interactions at Alkyl-Alkyl Interfaces Using Azobenzene Switches. Angew Chem Int Ed Engl 2019; 58:18552-18556. [PMID: 31556224 PMCID: PMC6916273 DOI: 10.1002/anie.201910734] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Indexed: 12/18/2022]
Abstract
Interactions on the molecular level control structure as well as function. Especially interfaces between innocent alkyl groups are hardly studied although they are of great importance in larger systems. Herein, London dispersion in conjunction with solvent interactions between linear alkyl chains was examined with an azobenzene-based experimental setup. Alkyl chains in all meta positions of the azobenzene core were systematically elongated, and the change in rate for the thermally induced Z→E isomerization in n-decane was determined. The stability of the Z-isomer increased with longer chains and reached a maximum for n-butyl groups. Further elongation led to faster isomerization. The origin of the intramolecular interactions was elaborated by various techniques, including 1 H NOESY NMR spectroscopy. The results indicate that there are additional long-range interactions between n-alkyl chains with the opposite phenyl core in the Z-state. These interactions are most likely dominated by attractive London dispersion. This work provides rare insight into the stabilizing contributions of highly flexible groups in an intra- as well as an intermolecular setting.
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Affiliation(s)
- Marcel A Strauss
- Institute of Organic Chemistry, Justus-Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany.,Center for Materials Research (LaMa), Justus-Liebig University Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany
| | - Hermann A Wegner
- Institute of Organic Chemistry, Justus-Liebig University Giessen, Heinrich-Buff-Ring 17, 35392, Giessen, Germany.,Center for Materials Research (LaMa), Justus-Liebig University Giessen, Heinrich-Buff-Ring 16, 35392, Giessen, Germany
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10
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Strauss MA, Wegner HA. Evaluierung von London‐Dispersions‐ und Lösungsmittel‐Interaktionen an Alkyl‐Alkyl‐Grenzflächen mittels Azobenzolschaltern. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910734] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Marcel A. Strauss
- Institut für Organische ChemieJustus-Liebig-Universität Giessen Heinrich-Buff-Ring 17 35392 Giessen Deutschland
- Zentrum für Materialforschung (LaMa)Justus-Liebig-Universität Giessen Heinrich-Buff-Ring 16 35392 Giessen Deutschland
| | - Hermann A. Wegner
- Institut für Organische ChemieJustus-Liebig-Universität Giessen Heinrich-Buff-Ring 17 35392 Giessen Deutschland
- Zentrum für Materialforschung (LaMa)Justus-Liebig-Universität Giessen Heinrich-Buff-Ring 16 35392 Giessen Deutschland
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11
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Mononuclear Ru(II) PolyPyridyl Water Oxidation Catalysts Decorated with Perfluoroalkyl C
8
H
17
‐Tag Bearing Chains. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900579] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Pollice R, Fleckenstein F, Shenderovich I, Chen P. Compensation of London Dispersion in the Gas Phase and in Aprotic Solvents. Angew Chem Int Ed Engl 2019; 58:14281-14288. [DOI: 10.1002/anie.201905436] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 07/17/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Robert Pollice
- ETH Zürich Laboratorium für Organische Chemie Vladimir-Prelog-Weg 2, HCI G207/ETH Zürich Zürich 8093 Switzerland
| | - Felix Fleckenstein
- ETH Zürich Laboratorium für Organische Chemie Vladimir-Prelog-Weg 2, HCI G207/ETH Zürich Zürich 8093 Switzerland
| | - Ilya Shenderovich
- Universität Regensburg Fakultät für Chemie und Pharmazie Universitätsstraße 31 Regensburg 93040 Germany
| | - Peter Chen
- ETH Zürich Laboratorium für Organische Chemie Vladimir-Prelog-Weg 2, HCI G207/ETH Zürich Zürich 8093 Switzerland
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13
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Pollice R, Fleckenstein F, Shenderovich I, Chen P. Compensation of London Dispersion in the Gas Phase and in Aprotic Solvents. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905436] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Robert Pollice
- ETH Zürich Laboratorium für Organische Chemie Vladimir-Prelog-Weg 2, HCI G207/ETH Zürich Zürich 8093 Switzerland
| | - Felix Fleckenstein
- ETH Zürich Laboratorium für Organische Chemie Vladimir-Prelog-Weg 2, HCI G207/ETH Zürich Zürich 8093 Switzerland
| | - Ilya Shenderovich
- Universität Regensburg Fakultät für Chemie und Pharmazie Universitätsstraße 31 Regensburg 93040 Germany
| | - Peter Chen
- ETH Zürich Laboratorium für Organische Chemie Vladimir-Prelog-Weg 2, HCI G207/ETH Zürich Zürich 8093 Switzerland
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14
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Pollice R, Chen P. A Universal Quantitative Descriptor of the Dispersion Interaction Potential. Angew Chem Int Ed Engl 2019; 58:9758-9769. [DOI: 10.1002/anie.201905439] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Robert Pollice
- ETH ZürichLaboratorium für Organische Chemie Vladimir-Prelog-Weg 2, HCI G207/ETH Zürich 8093 Zürich Switzerland
| | - Peter Chen
- ETH ZürichLaboratorium für Organische Chemie Vladimir-Prelog-Weg 2, HCI G207/ETH Zürich 8093 Zürich Switzerland
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15
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Pollice R, Chen P. A Universal Quantitative Descriptor of the Dispersion Interaction Potential. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905439] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Robert Pollice
- ETH ZürichLaboratorium für Organische Chemie Vladimir-Prelog-Weg 2, HCI G207/ETH Zürich 8093 Zürich Switzerland
| | - Peter Chen
- ETH ZürichLaboratorium für Organische Chemie Vladimir-Prelog-Weg 2, HCI G207/ETH Zürich 8093 Zürich Switzerland
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16
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Strauss MA, Wegner HA. Molecular Systems for the Quantification of London Dispersion Interactions. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800970] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Marcel A. Strauss
- Institute of Organic Chemistry; Justus-Liebig University Giessen; Heinrich-Buff-Ring 17 35392 Giessen Germany
| | - Hermann A. Wegner
- Institute of Organic Chemistry; Justus-Liebig University Giessen; Heinrich-Buff-Ring 17 35392 Giessen Germany
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17
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Liu Y, Parks FC, Zhao W, Flood AH. Sequence-Controlled Stimuli-Responsive Single–Double Helix Conversion between 1:1 and 2:2 Chloride-Foldamer Complexes. J Am Chem Soc 2018; 140:15477-15486. [DOI: 10.1021/jacs.8b09899] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yun Liu
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Fred C. Parks
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Wei Zhao
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
| | - Amar H. Flood
- Department of Chemistry, Indiana University, 800 East Kirkwood Avenue, Bloomington, Indiana 47405, United States
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18
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Lungerich D, Hitzenberger JF, Hampel F, Drewello T, Jux N. Superbenzene-Porphyrin Gas-Phase Architectures Derived from Intermolecular Dispersion Interactions. Chemistry 2018; 24:15818-15824. [DOI: 10.1002/chem.201803684] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Dominik Lungerich
- Department of Chemistry and Pharmacy & Interdisciplinary, Center for Molecular Materials (ICMM), Organic Chemistry II; Friedrich-Alexander-University Erlangen-Nuernberg; Nikolaus-Fiebiger-Str. 10 90458 Erlangen Germany
- Department of Chemistry & Molecular Technology Innovation Chair; University of Tokyo; 7-3-1 Hongo Bunkyo-ku Tokyo 113-0033 Japan
| | - Jakob F. Hitzenberger
- Department of Chemistry and Pharmacy; Physical Chemistry I; Friedrich-Alexander-University Erlangen-Nuernberg; Egerlandstr. 3 90458 Erlangen Germany
| | - Frank Hampel
- Department of Chemistry and Pharmacy & Interdisciplinary, Center for Molecular Materials (ICMM), Organic Chemistry II; Friedrich-Alexander-University Erlangen-Nuernberg; Nikolaus-Fiebiger-Str. 10 90458 Erlangen Germany
| | - Thomas Drewello
- Department of Chemistry and Pharmacy; Physical Chemistry I; Friedrich-Alexander-University Erlangen-Nuernberg; Egerlandstr. 3 90458 Erlangen Germany
| | - Norbert Jux
- Department of Chemistry and Pharmacy & Interdisciplinary, Center for Molecular Materials (ICMM), Organic Chemistry II; Friedrich-Alexander-University Erlangen-Nuernberg; Nikolaus-Fiebiger-Str. 10 90458 Erlangen Germany
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19
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San LK, Spisak SN, Dubceac C, Deng SHM, Kuvychko IV, Petrukhina MA, Wang X, Popov AA, Strauss SH, Boltalina OV. Experimental and DFT Studies of the Electron‐Withdrawing Ability of Perfluoroalkyl (R
F
) Groups: Electron Affinities of PAH(R
F
)
n
Increase Significantly with Increasing R
F
Chain Length. Chemistry 2017; 24:1441-1447. [DOI: 10.1002/chem.201704868] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Long K. San
- Department of Chemistry Colorado State University Fort Collins Colorado 80523 USA
| | - Sarah N. Spisak
- Department of Chemistry University at Albany, State University of New York Albany New York 12222 USA
| | - Cristina Dubceac
- Department of Chemistry University at Albany, State University of New York Albany New York 12222 USA
| | - Shihu H M. Deng
- Physical Sciences Division Pacific Northwest National Laboratory MS K8 88, P.O. Box 999 Richland Washington 99352 USA
| | - Igor V. Kuvychko
- Department of Chemistry Colorado State University Fort Collins Colorado 80523 USA
| | - Marina A. Petrukhina
- Department of Chemistry University at Albany, State University of New York Albany New York 12222 USA
| | - Xue‐Bin Wang
- Physical Sciences Division Pacific Northwest National Laboratory MS K8 88, P.O. Box 999 Richland Washington 99352 USA
| | - Alexey A. Popov
- Department of Electrochemistry and Conducting Polymers Liebniz Institute for Solid State and Materials Research Dresden 01069 Germany
| | - Steven H. Strauss
- Department of Chemistry Colorado State University Fort Collins Colorado 80523 USA
| | - Olga V. Boltalina
- Department of Chemistry Colorado State University Fort Collins Colorado 80523 USA
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20
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Li P, Maier JM, Vik EC, Yehl CJ, Dial BE, Rickher AE, Smith MD, Pellechia PJ, Shimizu KD. Stabilizing Fluorine–π Interactions. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702950] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Ping Li
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Josef M. Maier
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Erik C. Vik
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Christopher J. Yehl
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Brent E. Dial
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Amanda E. Rickher
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Mark D. Smith
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Perry J. Pellechia
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Ken D. Shimizu
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
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21
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Li P, Maier JM, Vik EC, Yehl CJ, Dial BE, Rickher AE, Smith MD, Pellechia PJ, Shimizu KD. Stabilizing Fluorine–π Interactions. Angew Chem Int Ed Engl 2017; 56:7209-7212. [DOI: 10.1002/anie.201702950] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Ping Li
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Josef M. Maier
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Erik C. Vik
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Christopher J. Yehl
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Brent E. Dial
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Amanda E. Rickher
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Mark D. Smith
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Perry J. Pellechia
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
| | - Ken D. Shimizu
- Department of Chemistry and Biochemistry University of South Carolina Columbia SC 29208 USA
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Yang L, Brazier JB, Hubbard TA, Rogers DM, Cockroft SL. Can Dispersion Forces Govern Aromatic Stacking in an Organic Solvent? Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508056] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Lixu Yang
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - John B. Brazier
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - Thomas A. Hubbard
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - David M. Rogers
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - Scott L. Cockroft
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
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Yang L, Brazier JB, Hubbard TA, Rogers DM, Cockroft SL. Can Dispersion Forces Govern Aromatic Stacking in an Organic Solvent? Angew Chem Int Ed Engl 2015; 55:912-6. [DOI: 10.1002/anie.201508056] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 10/13/2015] [Indexed: 12/27/2022]
Affiliation(s)
- Lixu Yang
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - John B. Brazier
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - Thomas A. Hubbard
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - David M. Rogers
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
| | - Scott L. Cockroft
- EaStCHEM School of Chemistry; University of Edinburgh, Joseph Black Building; David Brewster Road Edinburgh EH9 3FJ UK
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24
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Assaf KI, Ural MS, Pan F, Georgiev T, Simova S, Rissanen K, Gabel D, Nau WM. Water Structure Recovery in Chaotropic Anion Recognition: High-Affinity Binding of Dodecaborate Clusters to γ-Cyclodextrin. Angew Chem Int Ed Engl 2015; 54:6852-6. [PMID: 25951349 PMCID: PMC4510780 DOI: 10.1002/anie.201412485] [Citation(s) in RCA: 194] [Impact Index Per Article: 21.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 03/18/2015] [Indexed: 12/29/2022]
Abstract
Dodecaborate anions of the type B12X12(2-) and B12X11Y(2-) (X=H, Cl, Br, I and Y=OH, SH, NH3(+), NR3(+)) form strong (K(a) up to 10(6) L mol(-1), for B12Br12(2-)) inclusion complexes with γ-cyclodextrin (γ-CD). The micromolar affinities reached are the highest known for this native CD. The complexation exhibits highly negative enthalpies (up to -25 kcal mol(-1)) and entropies (TΔS up to -18.4 kcal mol(-1), both for B12I12(2-)), which position these guests at the bottom end of the well-known enthalpy-entropy correlation for CDs. The high driving force can be traced back to a chaotropic effect, according to which chaotropic anions have an intrinsic affinity to hydrophobic cavities in aqueous solution. In line with this argument, salting-in effects revealed dodecaborates as superchaotropic dianions.
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Affiliation(s)
- Khaleel I Assaf
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen (Germany)
| | - Merve S Ural
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen (Germany)
| | - Fangfang Pan
- University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box. 35, 40014 University of Jyvaskyla (Finland)
| | - Tony Georgiev
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen (Germany)
| | - Svetlana Simova
- Institute of Organic Chemistry with Center of Phytochemistry, Bulgarian Academy of Science, 1113 Sofia (Bulgaria)
| | - Kari Rissanen
- University of Jyvaskyla, Department of Chemistry, Nanoscience Center, P.O. Box. 35, 40014 University of Jyvaskyla (Finland).
| | - Detlef Gabel
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen (Germany).
| | - Werner M Nau
- Department of Life Sciences and Chemistry, Jacobs University Bremen, Campus Ring 1, 28759 Bremen (Germany).
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25
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Assaf KI, Ural MS, Pan F, Georgiev T, Simova S, Rissanen K, Gabel D, Nau WM. Water Structure Recovery in Chaotropic Anion Recognition: High-Affinity Binding of Dodecaborate Clusters to γ-Cyclodextrin. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201412485] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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